Citation:Valery PC, McWhirter W, Sleigh A, Williams G, Bain C 2002
From National Cancer Control Policy
Valery PC, McWhirter W, Sleigh A, Williams G, Bain C. Farm exposures, parental occupation, and risk of Ewing's sarcoma in Australia: a national case-control study. Cancer Causes Control 2002 Apr;13(3):263-70 Available from: http://www.ncbi.nlm.nih.gov/pubmed/12020108.
Critical appraisals